In looking at the off-the-shelf boxes, jitter seemed to vary from ps range to tens of ns. Also, how stable is the 34km of fiber... One of the manufacturers I looked at had a 1550nm option, so it's probably not a stretch to get it on a 100GHz ITU grid channel or other CWDM channel.
Scott Paul Boven wrote: > Hi everyone, > > In message <[EMAIL PROTECTED]>, Marco IK1ODO -2 > writes: >> Hi all, >> >> I have to carry a 10 MHz standard frequency signal inside an EMC >> screened room via fiber optic cable. >> >> Not willing to re-invent the wheel, do something like an optical >> standard frequency link exist on the market? >> I think it is possible to use standard 100MB LAN transceivers, and >> POF. Phase noise requirements >> are not very stringent, and the distance is in the order of some tens >> of meters. > > I'm looking into something similar: transmitting an H-Maser signal > (probably 10MHz) over some 34km using CWDM SFPs. At first glance this > seems fairly uncomplicated: get some SFPs, and SFP connector + cage. Use > a fast opamp/differential driver to drive the transmitting SFP, and use > a similar setup at the other end to transform the received data back to > 50 ohm unbalanced. How feasible would such a setup be? > Possible problems might be that a 10MHz squarewave is simply too 'slow' > to be transmitted by an SFP, which expects 1.25Gb/s 8/10 encoded data. > Another interesting question would be how much jitter/noise such a setup > would add? > > Regards, Paul Boven. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.